Product description
Dual Bipolar/JFET, Audio Operational Amplifier
The OP275 is the first amplifier to feature the Butler Amplifier front end. This new front end design combines both bipolar and JFET transistors to attain amplifiers with the accuracy and low noise performance of bipolar transistors, and the speed and sound quality of JFETs. Total Harmonic Distortion plus Noise equals that of previous audio amplifiers, but at much lower supply currents. A very low l/f corner of below 6Hz maintains a flat noise density response. Whether noise is measured at either 30Hz or 1kHz, it is only 6nV/vHz. The JFET portion of the input stage gives the OP275 its high slew rates to keep distortion low, even when large output swings are required, and the 22 V/us slew rate of the OP275 is the fastest of any standard audio amplifier. Best of all, this low noise and high speed are accomplished using less than 5 mA of supply current, lower than any standard audio amplifier.
Features
* Excellent Sonic Characteristics
* Low Noise: 6 nV/vHz
* Low Distortion: 0.0006%
* High Slew Rate: 22 V/us
* Wide Bandwidth: 9 MHz
* Low Supply Current: 5 mA
* Low Offset Voltage: 1 mV
* Low Offset Current: 2 nA
* Unity Gain Stable
Applications
* High Performance Audio
* Active Filters
* Fast Amplifiers
* Integrators
The OP275 is the first amplifier to feature the Butler Amplifier front end. This new front end design combines both bipolar and JFET transistors to attain amplifiers with the accuracy and low noise performance of bipolar transistors, and the speed and sound quality of JFETs. Total Harmonic Distortion plus Noise equals that of previous audio amplifiers, but at much lower supply currents. A very low l/f corner of below 6Hz maintains a flat noise density response. Whether noise is measured at either 30Hz or 1kHz, it is only 6nV/vHz. The JFET portion of the input stage gives the OP275 its high slew rates to keep distortion low, even when large output swings are required, and the 22 V/us slew rate of the OP275 is the fastest of any standard audio amplifier. Best of all, this low noise and high speed are accomplished using less than 5 mA of supply current, lower than any standard audio amplifier.
Features
* Excellent Sonic Characteristics
* Low Noise: 6 nV/vHz
* Low Distortion: 0.0006%
* High Slew Rate: 22 V/us
* Wide Bandwidth: 9 MHz
* Low Supply Current: 5 mA
* Low Offset Voltage: 1 mV
* Low Offset Current: 2 nA
* Unity Gain Stable
Applications
* High Performance Audio
* Active Filters
* Fast Amplifiers
* Integrators
